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BeoLab 4000 mkII schematics

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Retro-Repair / Richard
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Retro-Repair / Richard posted on Tue, Oct 6 2020 8:23 AM

Dear all,

I have a pair BeoLab 4000 mkII speakers that have a problem. I downloaded the Service Manual but unfortunately no schematics, only a block diagram. Is there perhaps someone that can help me with the schematics of these BeoLab 4000 mkII speakers?

Thank you,

Richard

 

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marexy
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Hi 

There is no service manual with shematics.

The same goes for BL4. 

What is the problem?

Tassos
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retrorepair:

Dear all,

I have a pair BeoLab 4000 mkII speakers that have a problem. I downloaded the Service Manual but unfortunately no schematics, only a block diagram. Is there perhaps someone that can help me with the schematics of these BeoLab 4000 mkII speakers?

Thank you,

Richard

I have schematics but of mki, I think the only difference is that mkii has class d amps whereas mki has ab class. If you want I can send them to you via email
Dillen
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MkI and MkII are far from identical. In fact they are quite different.

Martin

Retro-Repair / Richard
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Besides a small humming sound in both, one speaker makes a cracking noise...but not always. Sometimes it plays for minutes without any disturbances.

marexy
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marexy replied on Thu, Oct 8 2020 12:07 PM

May be bad solder joint or amplifier PCB.

Retro-Repair / Richard
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That solved it! A bad solder joint on the main PCB. Thanks a lot!

Regards,

Richard

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